Update app.py

app.py

@@ -3,7 +3,8 @@ api_key=os.getenv("HF_TOKEN")
 client = InferenceClient(api_key=api_key)
 
 messages = [
-	{ "role": "user", "content": "Tell me a story" }
+    { "role": "system", "content": "You are a good image generation prompt engineer for diffuser image generation models" },
+	{ "role": "user", "content": "Visualy describe a random character in extreme detail" }
 ]
 
 stream = client.chat.completions.create(